Rotary razor sharpener



c.B.coLL|Ns. l ROTARY RAZORSHARPENER.

APPLICATION FILED JUNE 7,1919.

Patented Aug. 15, 1922 1N VENTO/e 1 Troie/v5 y WITNESSES' c. B. COLLINS;

` ROTARY RAZOR SHARPENER.

APPLICATION FILED JUNE 7,1919.

1 ,426,152, Patented Aug. 15, 1922.

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frafeiicefa Aug.' 15,", 192a V,Application filed June "7, 1919. seriairm,r 30234176.

Be it knownthat/I, CAPWB. CoLLiNs,a citizenof the United Statearesidingat Oak Park, in the county of Cook and State of eners, of which the following-is a'speciiication.

-Heretofore l have produced '1a rotaryrazor hav-ing a circular disc blade revolved by a mechanical springdnotor contained -in the handle of the device. In suchvapparatus the casing or shell, constitutingaffsufitablyshaped handle, is 'composed of apairA of matching or registeringipartsythe constructionand connectionsfbeingsuch that-the manual turning of one ofsuch hand-'leclements relatively-to the other winds up the `motor.

l,The present invention concerns stroppin'g or sharpening mechanisms `for razors of this general type or style and doesvnot necessarily relate to therazor itself,.the improved sharpening `device being 'Wholly separate from the razorand constituting an laccessoryor attachment"applied thereto when stropping or sharpening of theblade is required. lt is designed, however, so asto vtake advantage of the driving mechanism forthe razor-blade to temporarilyfoperate the sharpening elements.

:ln order that those skilledfi'n this art inlay have a 'full vand complete understanding f this invention land its various structural and lfunctional advantages, llhave illustrated a preferred-and vdesirable embodimentof the same in the accompanying drawings-forming.- aipart of vthis yspecifi,eation'and throughout 4the views of Which-like reference 'cha racters refer-to thefsa-meparts.

In' these drawings: t v

Figure l is a vcentralvertical section through the razor -:and 'attached-stropping device; t c p u l`lligu-re 2 isa plan Yviewfof the l'structure nl ,Figiire l.; and c Figure/3 'is a fragmentary .side lelevation showing i the stroppingi-appliance in 1 its "relation to the blade upon which it acts.

Referring to `:these sdrawings, it Will be seen that the rotary-razor proper comprises 'the central post.

At' its upperfiend "sleeve 5'19 j-hias anzoatstanding circular 'flange 20-s'u'pprting-afhat apertured 'bladels'upporting ymenrberf :21, the

round, sharp-edged"disc-blade 22 beingv held anjysui-table design yercharacter':controlled 1by a fly-ball lgovernor landadapted tobe ffstartedor stopped' a brake finechanism actuated by` a readily-aceessihle sli'dingbut- IIllinois, have invented certain new a-nd 'use- Iton la. The 'construction `is such thatv the f ful mprovements` in RotaryY Razor Shar-pturning of: the'handlefor casing element l1 *wi-nds upthe spring of the imotor.` Thef'latter, ybyA means ofv suitablefgearingf rotatesa hollow-sleeve llvhaving Eav bearingA von la cenory hollow shaft^l9also havingv 4bearings-'Ion vided'withfa plurality olfapertures -24 and -mounted "on 'an externally-threaded "screw 25 AFadapted tor-be 'screwedni-nto theaupper threadedV end I ofV the rotary lsleeve' 19. Thus,

thi stube 'rotates withthe sleeve and forms a boar-ing vtor the latter'onrthelnpprfportion ofrpost 16. Beneath'thefbladefis astationaryiround, toothed y aceguard-26, land ywhen in use therazorais *equipped witha and' consequently 3 are! not shown f in -Figure l. vThe parts of the appliance so lfar described are not new in so far a'sthis patent application concerned,-=the presenta inven-` tion residing' solely` in the `demountable f stropping appliance about tof be vdescribed andits association lwith the razor. 5

Such sharpening apparatus "comprises Aa tubular support` 30 internally'iaffording "a bearing for a hollo'W hub 31-offa horizontal bevelfgear l -32 Yhaving one orfmorelugs 533 on itsv under `-sideladapted to lftlin thefv apertures 24 of the re`volubleblade-clamp 23,'threby forming ra drivingeonnection fbetween the latter and the former. As. is illustrated, the

gear is permanently rotatably secured to the element 30 by a collar or washer 34 fastened to the upper protruding end of the gear-hub 3l and overlying the top surface of pari-,30.

`To holdthe stropping device in position on the razor, a screw 35 is threaded into the socket 27, such screw having a knurled han dle or thumb-piece 36 at one end and an` unthreaded intermediate section 37 constituting` a support and bearing for the hub gear 3l. By means of this screw the whole unitary stropping device is demountably or detachably associated with the razor.

A studshaft 38 is fixed in a recess of and projects laterally from the 'supporting meinber 30 and revoluble onsuch shaft l provide a sleeve 39 to which is secured a bevel-gear 40 in mesh with gear 32 and a spur-gear 4l. A downwardly-bent frame 42 has two spaced parts 43 and v44 roclingly mounted respectively on the shaft between the elements 30 and 40 and on'the sleeve between the members 40 and 41. Such skeleton frame affords bearings for a shaft 45 provided at one end with a spur-gear 46 in mesh with gear-41 by means of which the shaft is rotated and at its other protruding end with a discshaped, circular, leather-stropper 47 held in position between two discs or collars 48 and 49 and adapted to engage the upper side of the edge of the razor-blade 22.

A supplemental or auxiliary frame 50 is hinged to the main-frame 42 on a pin 5l, a coiled torsion-spring 52 encircling such hinge-pin and having its ends bent around the parts of the two frames, whereby the lower or complementary one tends to swing upwardly. Frame 50 carries a rotary shaft 53 driven by a gear 54 thereon in mesh with gear 46, the shaft having a leather-stropping-disc 55 adapted to be accommodated be tween adjacent teeth of the faceguard 2G and to act transversely on the under side of the edge of the blade 22 a short distance to one side of the complementary stroppingvdisc 47. y

The operation of this appliance is substantially as follows:

The razor face-plate and its screw-thread ed shaft, referred to above but not shown., having been removed from the razor, and the stropping-appliance having been applied thereto and held in place by screw 85 with the two disc stroppers or Sharpeners engaging opposite sides of the circular edge ofthe blade in offset or staggered rel ation, and held pressed thereto by spring 52, the-operator winds up the razor motor l2 by turning part ll of the shell of the handle and sets the appliance upright, as shown. As will be readily understood, the motor notonly rotates the blade 22 in the usual way, but it also revolves both stropping discs at the same time through the gearing specified by reason of the clutch connection 17', 18 and all portions of the razors edge are successively and progressively acted upon by the pair of rotating stroppersthe blade making as many revolutions as may be necessary to thoroughly and keenly sharpen its edge. YWhen the stropping operation has been completed, if the motor has not run down, it may be stopped by manipulation of the hey 14. Then the entire stroppino apparatusv is removed or detached and the face-plate replaced, whereupon the sharpened razor is ready for use.

lt is to be understood that the invention to said blade revolving` means, whereby the latter actuates the former 'to strop the blade during its rotation.

2. A. stropping attachment for razors comprising in comeination a pair ofstropping elements, means to revolve said elements, and means to detachably secure said attachnient to a razor having blade-rotating means said element revolving means operai connected to vsaid'blade rotating means and with the stropping elements engaging the opposite sides of the edge of the blade, whereby the bla'de-rotating` means actuates the element revolving means to strop the blade on both sices of its edge simultaneously during the rotation of the blade.

A. stropping attachment for razors comprising in combination a pair of stropping elements in odset relation, means to revolve said elements, and means to detachably se- IOO cure said attachment to a razor having blade Vcar n. conLiNs, 

